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ipa.c (cgraph_build_static_cdtor_1): Support contructors with "chkp ctor" and "bnd_legacy" attributes.

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* ipa.c (cgraph_build_static_cdtor_1): Support contructors
        with "chkp ctor" and "bnd_legacy" attributes.
        * gimplify.c (gimplify_init_constructor): Avoid infinite
        loop during gimplification of bounds initializer.

From-SVN: r204198
This commit is contained in:
Ilya Enkovich 2013-10-30 09:08:14 +00:00 • committed by Kirill Yukhin
parent 2017035a60
commit 0038da6695
3 changed files with 42 additions and 8 deletions
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7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2013-10-30 Ilya Enkovich <ilya.enkovich@intel.com>
* ipa.c (cgraph_build_static_cdtor_1): Support contructors
with "chkp ctor" and "bnd_legacy" attributes.
* gimplify.c (gimplify_init_constructor): Avoid infinite
loop during gimplification of bounds initializer.
2013-10-30 Ilya Enkovich <ilya.enkovich@intel.com>
* c-family/c-common.c (handle_bnd_variable_size_attribute): New.

13
gcc/gimplify.c
View file

@ -4080,10 +4080,19 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
individual element initialization. Also don't do this for small
all-zero initializers (which aren't big enough to merit
clearing), and don't try to make bitwise copies of
TREE_ADDRESSABLE types. */
TREE_ADDRESSABLE types.
We cannot apply such transformation when compiling chkp static
initializer because creation of initializer image in the memory
will require static initialization of bounds for it. It should
result in another gimplification of similar initializer and we
may fall into infinite loop. */
if (valid_const_initializer
&& !(cleared || num_nonzero_elements == 0)
&& !TREE_ADDRESSABLE (type))
&& !TREE_ADDRESSABLE (type)
&& (!current_function_decl
|| !lookup_attribute ("chkp ctor",
DECL_ATTRIBUTES (current_function_decl))))
{
HOST_WIDE_INT size = int_size_in_bytes (type);
unsigned int align;

30
gcc/ipa.c
View file

@ -1260,9 +1260,11 @@ make_pass_ipa_whole_program_visibility (gcc::context *ctxt)
}
/* Generate and emit a static constructor or destructor. WHICH must
be one of 'I' (for a constructor) or 'D' (for a destructor). BODY
is a STATEMENT_LIST containing GENERIC statements. PRIORITY is the
initialization priority for this constructor or destructor.
be one of 'I' (for a constructor), 'D' (for a destructor), 'P'
(for chp static vars constructor) or 'B' (for chkp static bounds
constructor). BODY is a STATEMENT_LIST containing GENERIC
statements. PRIORITY is the initialization priority for this
constructor or destructor.
FINAL specify whether the externally visible name for collect2 should
be produced. */
@ -1321,6 +1323,20 @@ cgraph_build_static_cdtor_1 (char which, tree body, int priority, bool final)
DECL_STATIC_CONSTRUCTOR (decl) = 1;
decl_init_priority_insert (decl, priority);
break;
case 'P':
DECL_STATIC_CONSTRUCTOR (decl) = 1;
DECL_ATTRIBUTES (decl) = tree_cons (get_identifier ("chkp ctor"),
NULL,
NULL_TREE);
decl_init_priority_insert (decl, priority);
break;
case 'B':
DECL_STATIC_CONSTRUCTOR (decl) = 1;
DECL_ATTRIBUTES (decl) = tree_cons (get_identifier ("bnd_legacy"),
NULL,
NULL_TREE);
decl_init_priority_insert (decl, priority);
break;
case 'D':
DECL_STATIC_DESTRUCTOR (decl) = 1;
decl_fini_priority_insert (decl, priority);
@ -1338,9 +1354,11 @@ cgraph_build_static_cdtor_1 (char which, tree body, int priority, bool final)
}
/* Generate and emit a static constructor or destructor. WHICH must
be one of 'I' (for a constructor) or 'D' (for a destructor). BODY
is a STATEMENT_LIST containing GENERIC statements. PRIORITY is the
initialization priority for this constructor or destructor. */
be one of 'I' (for a constructor), 'D' (for a destructor), 'P'
(for chkp static vars constructor) or 'B' (for chkp static bounds
constructor). BODY is a STATEMENT_LIST containing GENERIC
statements. PRIORITY is the initialization priority for this
constructor or destructor. */
void
cgraph_build_static_cdtor (char which, tree body, int priority)